Did you try any of the rtc isolate functions and setting the rtc iomux select to not be adc function

RTC_CNTL_DG_PAD_FORCE_HOLD

You're saying any adc1 pin with a lead even when not configured as rtcio or adc function will still couple the noise into the adc and it will go haywire? What is the green line that looks less affected?

Well 1.1v is a 57% increase vs 0.7v but this is only until the voltage drops under the internal load. So this will have the greatest effect on the low current and short duration deepsleep cycles.

No, you only do steps 3&4 to update the app.

https://docs.espressif.com/projects/esp ... ption.html
https://docs.espressif.com/projects/esp ... -boot.html

uart_set_rx_timeout
rxfifo_full_thresh

I received an answer from Betty Liao at sales@espresiff.com. I'll share here for anyone else that may be interested: "Yes, our products are all FCC certificated. You will find the certificate on our official website. I put the link as below for your reference. https://www.espressif.com/en/certifica...

Download the reference design

No those keys are protected so you may as well just store another key in encrypted flash and use that.